vb.net中线程委托的简单实例

概述[原帖地址]http://topic.csdn.net/u/20111019/17/ac098c48-ed25-4e1f-acd0-ec192ca44eac.html '原先错误的写法!-------------------------Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Event

[原帖地址]http://topic.csdn.net/u/20111019/17/ac098c48-ed25-4e1f-acd0-ec192ca44eac.html

'原先错误的写法!-------------------------Private Sub button1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles button1.Click    Dim MyThread As New System.Threading.Thread(AddressOf sum)    MyThread.Start()End SubPrivate Sub sum()    Dim i,sum As Integer    For i = 0 To 100        sum += i    Next    Me.Text = CStr(sum)  '在这里就会报错,教我"如何跨线程调用windows窗体控件",表示没看懂End Sub-------------------------------------'正确的线程委托写法-------------------------------------Private Delegate Sub myDelegate(ByVal myString As String) '自定义一个委托Private Sub SetwindowText(ByVal myString As String) '与委托相同签名的函数或过程Me.Text = myStringEnd SubPrivate Sub button1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles button1.ClickDim MyThread As New System.Threading.Thread(AddressOf sum)MyThread.Start()End SubPrivate Sub sum()Dim i,sum As IntegerFor i = 0 To 100sum += iNextMe.Invoke(New myDelegate(AddressOf SetwindowText),sum.ToString) '委托的调用End Sub

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